Role of bauxite residue as a binding material and its effect on ...
2023年12月15日 · The safe disposal of bauxite residue (BR) poses significant economic challenges due to the large land area required, which increases the overall cost of alumina production. As a rough estimate, a 1-million-ton-per-year alumina factory needs 1,000,000 m 2 land every 5 years to accommodate the waste generated during the production process [46] .
Restoration-mediated protein substances preferentially drive …
The ideal strategy to solve bauxite residue stockpile and reduce the risk of environmental pollution is the resource utilization of bauxite residue, such as the recovery of valuable metals (e.g., Al, Fe, and rare earth metals), catalysts, adsorbents, construction materials, road base materials, and soil remediation agents (Xue et al., 2020; Zhang et al., 2020).
Climatic and hydrologic controls on upper Paleozoic bauxite …
2019年2月1日 · The bauxite deposits overlie a paleo-karstic surface developed on limestones of the Middle Ordovician Majiagou Formation, and they are covered by coal-bearing siliciclastic sediments or marlstone. The bauxite ore bodies fill shallow solution holes and deep dolines, and their shapes are thus controlled by the paleokarst topography.
Research progress on the enrichment of gallium in bauxite
2023年9月1日 · Bauxite is the product of surface weathering under humid tropical–subtropical conditions, and is one kind of aluminum hydroxides and oxides containing Si, Fe, and Ti (Bárdossy, 1982, Bárdossy and Aleva, 1990). The aluminum hydroxides in bauxite mainly consists of gibbsite [Al(OH) 3], boehmite [γ
Provenance and genesis of karstic bauxite deposits in China ...
2024年10月1日 · The bauxite-bearing rock series of the karstic bauxite deposits is primarily composed of bauxite and claystone interlayers, and the bauxite primarily is light gray in color (Fig. S1K and L) and exhibits oolitic, clastic, and nodular textures (Fig. S2G and H; Zhang et al., 2022).
Provenance and ore-forming process of Permian lithium-rich …
2022年6月1日 · Pisolitic bauxite is predominantly composed of diaspore (38–51 wt%) and chamosite (47–57 wt%), with small amounts of anatase (2–4 wt%), trace amounts of boehmite and goethite (Fig. 7 D to F; Table 2). In pisolitic bauxite ores, ooids, pisoids, and matrix are dominantly composed of diaspore and chamosite (Fig. 8 A to E).
Salt distribution and alkalinity characterization in bauxite residue ...
2024年7月10日 · Bauxite residue (red mud) has high alkalinity and salinity, which seriously restricts its reuse. It is crucial to understand the salt distribution pattern and alkalinity characteristics in the bauxite residue disposal area (BRDA), which can provide a theoretical basis for realizing the salinity and alkalinity regulation and reuse of bauxite ...
Reservoir characteristics and formation model of Upper …
2024年2月1日 · Bauxite classification Dense massive, pisolite-oolite, porous soil (soil or semi-soil) and clastic structures are observed in eastern Ordos Basin bauxite rocks. The dense massive bauxite is generally grey, grey-yellow, dense and hard, with a muddy texture, occasionally with sedimentary bedding, domi- nated by clay minerals.
Bauxite residue in cement and cementitious applications: Current …
2013年4月1日 · Bauxite residue, BR, is the insoluble slurry residue generated during the digestion of bauxite ores in the alumina producing Bayer process. BR slurries are strongly alkaline, have a high salt content, electrical conductivity and ionic strength.
Extraction of lithium and aluminium from bauxite mine tailings by …
2021年2月15日 · Alumina is a large metal consumer product, and the global demand of alumina is increasing every year. However, the distribution of bauxite resources in different countries is uneven, which stimulates the enthusiasm of scholars from all over the world, especially those in countries with low ore reserves or large demand gaps, to find additional new raw materials …